Build the builder image on native systems #1960
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Description
In order to cut down on the time taken to build the builder image, which is currently very long due to QEMU being used on small GHA VMs, we can move the non x86 images to be built on remote VMs hosted on GCP and IBM cloud. We already use these VMs for integration tests and for building s390x images, this is just extending the functionality for ppc64le and arm64.
The changes are based on the ones from #1593.
These changes will break #1838, will look into fixing that after we merge this, since the builder is now taking over 5 hours and I would like us to fix this situation as fast as possible.
Checklist
Automated testing
If any of these don't apply, please comment below.
Testing Performed
run-multiarch-builds
label. (CI run)